[PATCH] dmaengine: sprd: Support two-stage dma interrupt

[Cixi Geng <gengcixi@xxxxxxxxx>]

From: Cixi Geng <cixi.geng1@xxxxxxxxxx>

Audio need to request Audio CP global dma interrupt, so Audio CP
DMA should support two-stage interrupt to adapte it.
It will occur interrupt when two-stage dma channel transfer done.

Signed-off-by: Cixi Geng <cixi.geng1@xxxxxxxxxx>
---
 drivers/dma/sprd-dma.c       |  8 ++++----
 include/linux/dma/sprd-dma.h | 12 ++++++++++++
 2 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/drivers/dma/sprd-dma.c b/drivers/dma/sprd-dma.c
index 474d3ba8ec9f..7a9ade422a00 100644
--- a/drivers/dma/sprd-dma.c
+++ b/drivers/dma/sprd-dma.c
@@ -441,7 +441,7 @@ static int sprd_dma_set_2stage_config(struct sprd_dma_chn *schan)
 		val = chn & SPRD_DMA_GLB_SRC_CHN_MASK;
 		val |= BIT(schan->trg_mode - 1) << SPRD_DMA_GLB_TRG_OFFSET;
 		val |= SPRD_DMA_GLB_2STAGE_EN;
-		if (schan->int_type != SPRD_DMA_NO_INT)
+		if (schan->int_type != SPRD_DMA_SRC_CHN0_INT)
 			val |= SPRD_DMA_GLB_SRC_INT;
 
 		sprd_dma_glb_update(sdev, SPRD_DMA_GLB_2STAGE_GRP1, val, val);
@@ -451,7 +451,7 @@ static int sprd_dma_set_2stage_config(struct sprd_dma_chn *schan)
 		val = chn & SPRD_DMA_GLB_SRC_CHN_MASK;
 		val |= BIT(schan->trg_mode - 1) << SPRD_DMA_GLB_TRG_OFFSET;
 		val |= SPRD_DMA_GLB_2STAGE_EN;
-		if (schan->int_type != SPRD_DMA_NO_INT)
+		if (schan->int_type != SPRD_DMA_SRC_CHN1_INT)
 			val |= SPRD_DMA_GLB_SRC_INT;
 
 		sprd_dma_glb_update(sdev, SPRD_DMA_GLB_2STAGE_GRP2, val, val);
@@ -461,7 +461,7 @@ static int sprd_dma_set_2stage_config(struct sprd_dma_chn *schan)
 		val = (chn << SPRD_DMA_GLB_DEST_CHN_OFFSET) &
 			SPRD_DMA_GLB_DEST_CHN_MASK;
 		val |= SPRD_DMA_GLB_2STAGE_EN;
-		if (schan->int_type != SPRD_DMA_NO_INT)
+		if (schan->int_type != SPRD_DMA_DST_CHN0_INT)
 			val |= SPRD_DMA_GLB_DEST_INT;
 
 		sprd_dma_glb_update(sdev, SPRD_DMA_GLB_2STAGE_GRP1, val, val);
@@ -471,7 +471,7 @@ static int sprd_dma_set_2stage_config(struct sprd_dma_chn *schan)
 		val = (chn << SPRD_DMA_GLB_DEST_CHN_OFFSET) &
 			SPRD_DMA_GLB_DEST_CHN_MASK;
 		val |= SPRD_DMA_GLB_2STAGE_EN;
-		if (schan->int_type != SPRD_DMA_NO_INT)
+		if (schan->int_type != SPRD_DMA_DST_CHN1_INT)
 			val |= SPRD_DMA_GLB_DEST_INT;
 
 		sprd_dma_glb_update(sdev, SPRD_DMA_GLB_2STAGE_GRP2, val, val);
diff --git a/include/linux/dma/sprd-dma.h b/include/linux/dma/sprd-dma.h
index d09c6f6f6da5..26de41d6d915 100644
--- a/include/linux/dma/sprd-dma.h
+++ b/include/linux/dma/sprd-dma.h
@@ -101,6 +101,14 @@ enum sprd_dma_req_mode {
  * is done.
  * @SPRD_DMA_CFGERR_INT: configure error interrupt when configuration is
  * incorrect.
+ * @SPRD_DMA_SRC_CHN0_INT: interrupt occurred when source channel0
+ * transfer is done.
+ * @SPRD_DMA_SRC_CHN1_INT: interrupt occurred when source channel1
+ * transfer is done.
+ * @SPRD_DMA_DST_CHN0_INT: interrupt occurred when destination channel0
+ * transfer is done.
+ * @SPRD_DMA_DST_CHN1_INT: interrupt occurred when destination channel1
+ * transfer is done.
  */
 enum sprd_dma_int_type {
 	SPRD_DMA_NO_INT,
@@ -112,6 +120,10 @@ enum sprd_dma_int_type {
 	SPRD_DMA_TRANS_BLK_INT,
 	SPRD_DMA_LIST_INT,
 	SPRD_DMA_CFGERR_INT,
+	SPRD_DMA_SRC_CHN0_INT,
+	SPRD_DMA_SRC_CHN1_INT,
+	SPRD_DMA_DST_CHN0_INT,
+	SPRD_DMA_DST_CHN1_INT,
 };
 
 /*
-- 
2.34.1